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use single buffer for outgoing l2cap packets

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This commit is contained in:
matthias.ringwald 2011-07-28 22:25:15 +00:00
parent 427c70d1f7
commit 816c0598b2
1 changed files with 12 additions and 5 deletions
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17
src/l2cap.c
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@ -55,6 +55,14 @@
#define L2CAP_MINIMAL_MTU 48
#define L2CAP_DEFAULT_MTU 672
// determine size of outgoing packet construction buffer - this includes ACL + L2CAP header
#if (L2CAP_MINIMAL_MTU + L2CAP_HEADER_SIZE) > (HCI_ACL_BUFFER_SIZE)
#define L2CAP_PACKET_BUFFER_SIZE (HCI_ACL_DATA_PKT_HDR + L2CAP_HEADER_SIZE + L2CAP_MINIMAL_MTU)
#else
#define L2CAP_PACKET_BUFFER_SIZE (HCI_ACL_DATA_PKT_HDR + HCI_ACL_BUFFER_SIZE)
#endif
// nr of buffered acl packets in outgoing queue to get max performance
#define NR_BUFFERED_ACL_PACKETS 3
@ -75,8 +83,7 @@ static l2cap_signaling_response_t signaling_responses[NR_PENDING_SIGNALING_RESPO
static int signaling_responses_pending;
// static buffers
static uint8_t sig_buffer[HCI_ACL_DATA_PKT_HDR + L2CAP_HEADER_SIZE + L2CAP_MINIMAL_MTU];
static uint8_t acl_buffer[HCI_ACL_DATA_PKT_HDR + HCI_ACL_BUFFER_SIZE];
static uint8_t acl_buffer[L2CAP_PACKET_BUFFER_SIZE];
static linked_list_t l2cap_channels = NULL;
static linked_list_t l2cap_services = NULL;
@ -221,10 +228,10 @@ int l2cap_send_signaling_packet(hci_con_handle_t handle, L2CAP_SIGNALING_COMMAND
// log_info("l2cap_send_signaling_packet type %u\n", cmd);
va_list argptr;
va_start(argptr, identifier);
uint16_t len = l2cap_create_signaling_internal(sig_buffer, handle, cmd, identifier, argptr);
uint16_t len = l2cap_create_signaling_internal(acl_buffer, handle, cmd, identifier, argptr);
va_end(argptr);
// log_info("l2cap_send_signaling_packet con %u!\n", handle);
return hci_send_acl_packet(sig_buffer, len);
return hci_send_acl_packet(acl_buffer, len);
}
int l2cap_send_internal(uint16_t local_cid, uint8_t *data, uint16_t len){
@ -390,7 +397,7 @@ void l2cap_run(void){
}
static uint16_t l2cap_max_l2cap_mtu(void){
return hci_max_acl_data_packet_length()-4; // 4 bytes for L2CAP header
return hci_max_acl_data_packet_length() - L2CAP_HEADER_SIZE;
}
// open outgoing L2CAP channel